... damping for several different blade vibration modes, including bending and torsion, were determined. Results of the experiments indicated that aerodynamic damping was a large component of the total damping for all modes. A study of structural damping as a function of rotational speed was also included...

... periodic system of elements vibrational modes modal analysis harmonics sensitivity stability modelling Turbine engine bladed disks belong to a class of structures generally referred to as periodic. Such structures exhibit families of extended modes with closely spaced natural frequencies...

... vibrational modes deformation eigenvalues and eigenfunctions finite element analysis Dynamic analyses of bladed disks or blisks found in turbomachinery rotors typically involve several idealizations of true conditions. Two such idealizations are of particular interest to the investigation reported...

... Oct. 1999; final revision received by ASME Headquarters Oct. 2000. Associate Editor: D. Wisler. 08 May 2000 01 Oct 1999 01 Oct 2000 dynamic response vibrational modes localised modes wave propagation finite element analysis mechanical testing The design...

... April 2, 2000. Associate Editor: M. Mignolet. 08 May 2000 14 January 2000 02 April 2000 rotors gas turbines turbogenerators vibrations vibrational modes modal analysis design engineering modelling finite element analysis The blades of a bladed disk are intended...

... vibrations vibrational modes modal analysis design engineering modelling The adverse effects of structural irregularities, or mistuning, among the blades of turbomachinery rotors is a persisting concern in the gas turbine community. Mistuning is caused by manufacturing tolerances, deviations...

... received by the ASME Headquarters June 9, 1999. Editor: H. D. Nelson. 04 May 1999 09 June 1999 rotors turbines vibrations vibrational modes modal analysis identification parameter estimation frequency response elasticity mass In regards to the maximum likelihood (ML...

... vibrations vibrational modes modal analysis identification parameter estimation frequency response elasticity mass A large number of investigations have focused, in the last thirty years, on the assessment of the effects of mistuning, i.e., small blade-to-blade variations of their mechanical...